Press structure



Sept. 4, 1945. w, ERNST PRESS STRUCTURE Filed Jan. 7, 1943 M um-lINVENTOR M M Tu E O D E A W 7 Patented Sept. 4, 1945 UNITED STATESPATENT OFFICE PRESS STRUCTURE Application January '7, 1943, Serial No.471,565

6 Claims.

My invention relates to press structures, and particularly to aconstruction of the base of a hydraulic press.

The object of the invention is to lighten the base portion of a pressconsisting of integral side walls and head by removing wall portionspreviously located adjacent to supplemental members carried in the bed.Such supplemental members were previously inserted through windows inthe side of the press construction and supplemented the press bed.

Another object is to provide simple means for strengthening the baseportion thus lightened, so as to counteract bending tendencies of theside walls while the press is under working stress.

Another object of the invention is to provide a simple means ofinserting the filler block, constituting the press bed, within the sidewalls of the press, of positioning the single block in the base of thepress and tying the block to the side walls of the press.

Referring to the drawing:

Figure l is a vertical section through the assembled press;

Figure 2 is a section on the line 22 of Figure 3 looking in thedirection of the arrows, showing the side walls of the press in section,and a portion of the press bed block in section;'

Figure 3 is a vertical section through the press on the line 33, lookingin the direction .of the arrows of Figure l.

Referring to the drawing in detail:

The press consists of a cap member I integrally formed with thecylindrical side walls 2 forming the head of the press. Mounted in thecap member I are the surge valves 3 communicating with the tank 4. Thepressing member 3a reciprocates within the side walls 2 in the cylinder41). It is actuated on its forward motion by the direct ap plication ofpressure fluid to cylinder 4b through pipe 4a; and on its reverse motionby piston rods 5 operating in the cylinders 6 to which hydraulic fluidis supplied through the pipes I. The platen 3b, which is movable withmember 3a, is guided within the legs 8 arcuate in cross section of theside walls which are spaced oppositely from one another as shown inFigure 2, so that a. space 9 is left between them on either side of thepress through which work can be inserted and removed, and through whichthe bed block l0 canbe inserted and positioned. It will be noted thatthe spaces 9 extend downwardly the entire length of the legs 8. This isapparent in Figures 2 and 3. In the lower portion of the press, adjacentthe block 10, these spaces represent an item of economy of material, andalso permit the operator to stand as close to the work as possible.

The bed block l0 consists of a block having a positioning shoulder ll,flat side walls l2 and arcuate ends 13. It is introduced between thearcuate side walls 8 with its flat side walls parallel generally, to thearcuate walls 8. When within the press, the block In is rotated untilits arcuate ends I3 engage with the arcuate legs 8. It is then lowereduntil the shoulder H engages a shoulder 8a of the legs 8 in the base ofthe press. Thereupon, the transverse bolts H are inserted through theside walls 8 and the block ill to tie the side walls and bed blocktogether rigidly. The actuating cylinders 6 are positioned upon the bedblock I, preferably adjacent the shoulder 8a.

Prior to the insertion of block 10 into the base. the pressing member 3ais assembled. The opening in the base serves to admit this member. Theplaten 3b is admitted through the openings 9, a 90 rotation of theplaten being required, as in the case of block H), to position it forassembly.

In tying the legs I and block HI together in a unitary structure, thebolts l4 counteract a tendency for legs 8 to spread or bend laterallyduring the subjection of the press to working forces. They thusconstitute a lightweight and inexpensive means for replacing a heavycontinuous, wall at the base of the press, such as has been employedpreviously.

Having thus fully described my invention, what I claim as new and desireto secure by Letters Patent is:

1. In combination, a one piece press frame having spaced legs, a bedblock having one transverse dimension equal to the space between thelegs and another transverse dimension less than the space between thelegs, whereby said bed block can be inserted between the legs androtated into position in engagement with the legs, said legs and saidbed having complementary arcuate portions adapted to be in juxtapositionto each other when said press has been assembled.

2. In combination, a one piece press frame having spaced legs, a bedblock having one transverse dimension equal to the space between thelegs and another transverse dimension less than the space between thelegs, whereby said bed block can be inserted between the legs androtated into position in engagement with the legs, and means ofanchoring said bed block within said legs comprising transverse bolts,said legs and said bed having complementary arenate portions adapted tobe in juxtaposition to' each other when said press has been assembled.3. In combination, a one piece press frame having spaced legs, a bedblock having one said legs for positioning vertically the bed block withrespect to the legs and the anchoring means, said legs and said bedhaving complementary arcuate portions adapted to be in juxtaposition toeach other when said press has been assembled.

4. In combination, a one piece press frame consisting of integral legsspaced from one another, connected at the top by a cap block, the lowerend of said press having an opening through which a pressing member maybe inserted, and a bed block adapted to fill this opening between saidlegs, said bed block having one dimension equal to the distance betweenthe inner walls of said legs, and another dimension at right anglesthereto, lesser in distance than the distance between the walls of thelegs, said legs and said bed having complementary serted, and a bedblock adapted to fill this opening between said legs. said bed blockhaving one dimension equal to the distance between the inner walls ofsaid legs, and another dimension at right angles thereto, lesser indistance than the distance between the walls of the legs, and means foranchoring the bed block between said legs comprising transverse boltspassing through the legs and the bed block, said legs and said bedhaving complementary arcuate portions adapted to be in juxtaposition toeach other when said press has been assembled.

6. In a press structure, a unitary frame comprising a continuous,substantially vertical wall having its lower portions cut away to formtwo spaced legs arcuate in cross section, a bed block fitting betweenthe free ends of said legs and having a transverse dimension not greaterthan the shortest distance between said legs, and through bolts securingsaid legs to said bed, said bolts constituting the only means securingsaid legs against spreading at the free ends thereof.

WALTER ERNST.

